10 Best Air Purifiers for Breathing Cleaner, Fresher Home Air
Jump into our list of the 10 best air purifiers and discover which ones truly transform your home's air—can you guess the top pick?
Independent product research and comparisons to help you find the right products faster.
Independent product research and comparisons to help you find the right products faster.
Heating, Cooling & Air Quality
10 Best Portable Air Conditioners That Cool Down Any Room Fast
Keep your cool this summer with our top 10 portable air conditioners—discover which model will transform your hottest room into a chill oasis.
10 Best Dehumidifiers That Keep Your Home Fresh and Comfortable
Looking for the perfect dehumidifier to keep your home fresh and comfortable? Learn which top 10 picks stand out before you decide.
What Size Portable Air Conditioner Do I Need?
To choose the right portable air conditioner, start by calculating your room's square footage: multiply length by width, then compare that number to a unit's cooling capacity. BTUs measure cooling power, but the SACC rating gives a more realistic picture of what a portable unit can actually handle in real conditions.
Sun-facing windows, high ceilings, weak insulation, and extra people in the room can all increase cooling needs beyond the base square footage calculation. Getting the size wrong in either direction has consequences: an undersized unit will struggle to cool the space, while an oversized one wastes energy and money. Here's how to narrow down the right size for your specific room.